• The Contents

    Click the Contents tab to look through topic titles. (Keybord shortcut: Alt+C)
    The Contents is shown as hierarchical items list.

    For example, open Webster's Unabridged Dictionary on Letter W (see the following figure):

    To open an item in the table of contents, click the plus sign (+) in front of a node to expand that node, then double-click the item you want to see. Click the minus sign (-) in front of a node to contract that node. You can travel from item to iem using Up and Down keyboard keys and right and left keys to expand and collapse (sub)nodes.
    To view a topic, click the topic in the table of contents.
    To view all topic beginning from certain letter, click this letter node.